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Shepherd Umanah
Products

Products I've built and kept running

Real systems, live in production, not concepts. Each one covers the problem as it arrived, what I did about it, and what changed. The numbers are real and attributable.

Healthcare2024

An EMR backend for 1,000+ clinics

Built the backend for the Zimdoc medical records app, took deploys from three minutes to fifteen seconds, and cut response times by two thirds.

Amazing PhysioTherapy

1,000+
users and clinics served
3min → 15s
deploy time, 92% faster
Fintech2024 to present
Pryme logo

Just-in-time card issuance at national scale

Backend work on Pryme, Qore's card issuance platform, which sits behind 85% of all card issuance in Nigeria.

Pryme · Qore Technologies

85%
of all cards issued in Nigeria
Just-in-time
issuance at the branch
Fintech2024 to present
BankOne logo

Core banking for 500+ African institutions

Backend work on BankOne, Qore's cloud-native core banking platform, used by more than 500 financial institutions across Africa.

BankOne · Qore Technologies

500+
financial institutions on the platform
13 years
the platform has been running
Public sector2023
PTAD, Pension Transitional Arrangement Directorate, logo

Pension verification for every Nigerian pensioner

The I AM ALIVE confirmation system for PTAD, serving over 5 million pensioners, built for people who are elderly, not technical, and often on a bad connection.

PTAD, Federal Government of Nigeria

5M+
pensioners verified nationwide
Nationwide
every eligible Nigerian pensioner
Identity2023
Dotta logo

Facial biometric verification as an API

Facial verification a business can integrate in an afternoon, without hiring anyone who knows what a face embedding is.

Dotta

API-first
integration model
Biometric
facial verification
Infrastructure2025

Self-hosted S3-compatible object storage

An object storage server that speaks S3, so your existing tools keep working against hardware you own.

Open source

S3-compatible
API surface
Go
core implementation
Developer tools2025

An Entity Framework-style ORM for Go

GoNtext brings EF Core's ergonomics to Go: typed queries, change tracking and migrations, without making Go stop feeling like Go.

Open source

4
supported databases
Type-safe
query construction
Media2025

A live streaming platform, end to end

RTMP in, HLS out, adaptive playback and live chat. The whole path from a streamer's encoder to a viewer's player.

Personal project

RTMP → HLS
ingestion pipeline
Adaptive
bitrate playback
Communications2025

Peer-to-peer calling over WebRTC

Audio and video meetings where the media goes directly between participants and only the introductions run through a server.

Personal project

WebRTC
peer-to-peer media
SignalR
signalling layer

Working on something similar?

If one of these looks like your problem, the conversation will be short and useful.

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